The boy wanted to ride his bicycle in the street, but his mother told him .
A. not to
B. not to do
C. not do it
D. do not to
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(答案→)A. not to
B. not to do
C. not do it
D. do not to
解析：本题考查省略句结构。所填指出补充完整应为“not to ride his bicycle in the street”，因前文出现过“ride his bicycle in the street”，故可省略，避免重复，但不定式标志则予以保留。句意: 那男孩想到街上骑他的自行车，但他妈妈告诫他不要那样做。